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Characteristics and application of refractory mud

Date:2019-11-27   Click:324

What is fireclay, what is it used for and what is its performance? With these questions, let's look at the following:

Refractory mud: refractory mud is a kind of plastic refractory containing silicon oxide. Under the action of high temperature molten metal, it forms a unique SiC + C + SiO2 glassy structure. The surface of the glass structure is smooth, and the slag on the surface of the liquid metal is difficult to adhere. It is easy to remove scum. It has outstanding surface peeling resistance and corrosion resistance. It can be used as a new material and repair material for hot metal transmission equipment.


The properties of refractory mud are as follows

1. Good plasticity and convenient construction;

2. High adhesive strength and strong corrosion resistance;

3. High fire resistance, the average temperature is 1650 ℃ ~ 50 ℃;

4. Good thermal damage. In refractory clay drying furnace, glass furnace, blast furnace hot blast stove, other industrial furnaces are mainly used. It is suitable for Industry: metallurgy, building materials, machinery, petrochemical, glass, boiler, electric power, steel, cement, etc

Refractory cement is also called aluminate cement. Aluminate cement is a kind of hydraulic cementitious material made from bauxite and limestone by roasting. The clinker is mainly composed of calcium aluminate, containing about 50% alumina. Aluminate cement is often yellow or brown, but also gray. The main mineral of aluminate cement is a kind of special cement, which is reduced to caoal2o3 and other aluminates, and contains a small amount of dicalcium silicate.

Characteristics and application of refractory cement

1. There is no big difference in refractoriness and fire resistance, because the increase of initial mixing gun is small when there is no refractory cement but no workpiece, so the load is slightly higher than the softening point of refractory brick. Nevertheless, from the overall index, the performance of refractory brick is higher.

2. The effect of fire-resistant cement is greater than that of low-temperature cementitious material, but the compressive strength at room temperature is lower. At the same time, due to the good quality of masonry, good air tightness and easy forming, the steel of furnace shell at the furnace door can be taken out, and the blast furnace has better resistance to mechanical anger and impact than brick masonry. For example, as the head of the side wall of soaking furnace, the abrasion and collision of the machine are satisfactory, and the furnace life is several times longer than that of bricks.

3. The thermal stability of masonry is good, most or all of which are clinker. The shrinkage and material accumulation offset each other. The thermal expansion of masonry is less than that of brick, and the temperature deformation is small. The structure presents various network, needle and chain crystal phases. Good low temperature deformation resistance. For example, it is used for the welding of soaking pit top and furnace cover. The furnace life is shortened to one and a half years.

4. The production process is simple and simple brick making process is adopted. It can be made into various steel frame blocks and various steel frame blocks, thus greatly speeding up the construction speed of building furnace, and the masonry efficiency is more than 10 times of masonry performance. Waste brick can also be used as aggregate, waste brick can also be used as raw material.

Anyang dingyang metallurgical refractory materials Co., Ltd. mainly supplies refractory mud